The ROI of Having a Senior Full Stack Developer on Call for Your Organization ( on Slack )

Richardson Dackam
8 min readMar 29, 2023

Hiring a senior full-stack developer can be a challenging and costly endeavour for any organization. Furthermore, finding the right senior full-stack developer is neither quick nor easy. As you search for ways to get the most value out of your investment and keep your development team running smoothly, you might be wondering if there’s a better approach. In this blog post, we’ll dive into the advantages of keeping a senior full-stack developer on-call in your organization and how it can be a budget-friendly and practical solution to tackling everyday software development challenges.

The Cost of Hiring Senior Developers vs. Keeping Senior Developers On Call

Hiring a new senior full-stack developer can be a time-consuming and expensive process. On average, it takes about 45 days to find and hire a new developer, with costs reaching as high as $30,000 in recruitment fees and onboarding expenses. In contrast, when you have a developer on-call you can save both time and money, as they are already familiar with your organization’s technology stack and processes.

  1. Recruitment fees: Many companies use recruitment agencies to find qualified candidates. These fees can range from 15% to 25% of the candidate’s annual salary. For a senior developer with an average salary of $120,000, this equates to $18,000 to $30,000 in fees.
  2. Job posting fees: Posting on various job boards can cost anywhere from $100 to $500 per posting, depending on the platform and duration of the advertisement.
  3. Time spent on interviews and assessments: The time invested in screening, interviewing, and assessing candidates can add up quickly. Assuming an average of 30 hours spent per candidate at a $50/hour opportunity cost, this could result in $1,500 per hire.
  4. Onboarding and training: Once a new developer is hired, there are additional costs for onboarding and training. This can include orientation, setting up equipment, and providing necessary resources. On average, onboarding costs can range from $4,000 to $7.

The ROI of an On-Call Senior Full Stack Developer

1. Code Review

Conducting code reviews is an essential aspect of maintaining code quality and ensuring that the development process is efficient and effective

Find Bugs Early: An experienced developer can identify potential issues and bugs during the code review process, saving your organization time and resources on fixing problems later in development.

Enforce Best Practices: A senior developer can ensure that your team follows industry best practices, leading to more maintainable and efficient code.

Avoid Spaghetti Code: With a keen eye for clean and structured code, an on-call senior developer can help prevent hard-to-maintain spaghetti code from creeping into your projects.

Enforce Security Compliance: By identifying and addressing potential security risks early on, a senior developer can help protect your organization from costly breaches and compliance violations.

2. Testing

Automate Testing: Senior developers can implement automated testing processes, reducing the time spent on manual testing and increasing overall code quality.

Prevent Human Error: Automated tests can catch errors that might be overlooked by human testers, improving overall code stability and performance.

Streamline Development: Implementing automated testing processes can accelerate the development cycle and improve collaboration between developers and QA teams.

Streamline QA: With a senior developer’s guidance, QA teams can focus on high-impact issues and improve overall testing efficiency.

3. CI/CD Pipeline

Automate Deployment: A senior full stack developer can set up and maintain continuous integration and continuous deployment

Automate Delivery: By automating the delivery process, your organization can reduce the risk of human error and speed up time-to-market.

Reduce Failures: With a robust CI/CD pipeline, you can detect and address failures early in the development process, minimizing disruptions to your production environment.

Reduce Rollbacks: An efficient CI/CD pipeline can significantly reduce the need for rollbacks, saving time and resources in the long run.

4. Support and Maintenance

Proactive Maintenance: An on-call senior full-stack developer can regularly monitor and maintain your applications, ensuring they remain up-to-date and performant. This proactive approach can help prevent downtime, reduce technical debt, and minimize long-term maintenance costs.

Rapid Response to Issues: In case of application issues or outages, having an experienced developer on call allows for quick identification and resolution of problems, reducing downtime and ensuring a positive user experience.

Scalability and Performance Optimization: An on-call senior developer can provide valuable insights and guidance in optimizing your applications for scalability and performance, ensuring they can handle growing user demands and operate efficiently.

5. New Features and Integrations

Complementary Expertise: An on-call senior developer can bring additional skills and experience to your existing in-house development team, filling in gaps in knowledge or offering specialized expertise when needed. This can help your organization tackle complex or unfamiliar projects with confidence.

Accelerate Project Delivery: In cases where your in-house team is facing tight deadlines or increased workloads, an on-call developer can provide extra support to help you meet those deadlines and deliver new features on time, without sacrificing quality.

Cross-Functional Collaboration: An on-call senior developer can collaborate with other teams within your organization, such as product management, design, and data analysis, to ensure that new features are well-integrated and aligned with business objectives.

Knowledge Transfer and Mentorship: By working closely with your in-house developers, an on-call senior developer can share their expertise, best practices, and insights, helping to upskill your team and improve overall development capabilities.

Risk Mitigation: In situations where your in-house team encounters technical challenges or uncertainties, having an on-call senior developer can provide an additional layer of support, helping to mitigate risks and

Maximizing Efficiency with Slack

Slack is a perfect place for keeping a roster of developers on call. When a developer finishes his contract, instead of removing them from your organization's slack account; keep them on it as a guest user for that organization’s account. You will still have the ability to limit what channel they can access and make it easy for your team to work and collaborate with the developer. These same ideas also apply to other similar chat apps like Microsoft Team. Having a developer on call on your slack will help your team quickly address issues, share knowledge, and keep your projects on track when needed.

Example 1: Bug Investigation
Imagine a situation where your in-house team encounters a critical bug that is affecting your application’s performance. Instead of spending hours troubleshooting the issue themselves, your team can quickly engage an on-call developer in a dedicated Slack channel. The developer can review logs, share their insights, and collaborate with your team to resolve the issue more efficiently, minimizing downtime and user impact.

Example 2: Code Review and Mentorship
In another scenario, your in-house developers may be working on a complex feature with multiple dependencies. They could benefit from the expertise of an on-call senior developer who can participate in code review discussions via Slack. This collaboration can help identify potential issues, suggest improvements, and

source: https://www.getclockwise.com/blog/team-management-slack

How to add guest developers on Slack?

  1. Open Slack and sign in as an administrator on your workspace, or a member with the necessary permissions.
  2. Click on the “+” icon next to “Direct Messages” in the left sidebar.
  3. In the search bar, type the email address of the person you want to invite as a guest user.
  4. Select “Invite a new single-channel guest” or “Invite a new multi-channel guest” from the search results, depending on the access you want to grant.
  5. Choose the channel(s) you want the guest user to access. ( I usually recommend creating an #oncall channel so that your team is aware that they can reach out when needed )
  6. Add a message to your invitation (optional) and click “Send Invitation.”

Cost Management Options

When evaluating the cost of having an on-call senior full-stack developer, consider the following pricing models:

  1. Fixed Price: With a fixed-price agreement, your organization pays a set amount for a specific project or period, providing cost certainty and budget control.
  2. Pay per Hour: An hourly rate allows for more flexibility and can be a cost-effective solution for short-term projects or tasks, but requires careful monitoring to avoid budget overruns.
  3. Pay Monthly: A monthly subscription model can provide ongoing access to a senior developer’s expertise while spreading costs over time, making it easier to budget and plan.

Each of these options has its advantages and drawbacks, so carefully consider your organization’s needs and budget when making a decision. By calculating the potential cost savings and efficiency gains, you can better understand the true ROI of having a senior full-stack developer on call for your organization.

Conclusion

As a Senior Full-Stack Developer with a wealth of on-call experience across various organizations, I’ve seen the powerful impact that this approach can have on a company’s software development process. Not only does an on-call developer provide immediate access to specialized expertise, but they also help build long-lasting relationships between the developer and the organization. These mutually beneficial relationships allow developers to gain a deep understanding of the company’s technology stack, culture, and goals, while the organization can count on a trusted advisor to quickly address challenges, offer guidance, and share valuable insights.

By tapping into their expertise in code review, testing, and CI/CD pipelines, an on-call senior developer can significantly enhance your development process, reduce costs, and improve software quality. This makes the ROI of having an on-call senior developer quite evident, presenting a valuable investment for organizations of all sizes — even those with in-house full-time developers. Over the years, I’ve watched many companies flourish thanks to having an on-call Senior Full-Stack Developer on their team. The value derived from this arrangement often surpasses the initial investment, leading to greater efficiency, cost savings, and overall success in software development.

If you’re struggling to build a Ruby on Rails application and need a developer on call — I’m here to help. As a senior full-stack developer with expertise in building robust and scalable applications, I can assist you in creating a high-quality application that meets your needs. Whether you need help with project planning, development, or deployment, I’m available to support you. Contact me via LinkedIn or my company’s website to explore how we can work together to create a powerful Ruby on Rails application that exceeds your expectations.

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Richardson Dackam

Self-taught Developer, Technology Writer, Startups Founder, Crypto Enthousiast, Youtuber, Twitch Partner, and Podcast Host